Section 55(1)

Notwithstanding anything in this Act, any government department and any person authorised in writing by a government department may, for the services of the Crown and in accordance with this section, do any of the following acts in the United Kingdom in relation to a patented invention without the consent of the proprietor of the patent, that is to say— and anything done by virtue of this subsection shall not amount to an infringement of the patent concerned. where the invention is a product, may— make, use, import or keep the product, or sell or offer to sell it where to do so would be incidental or ancillary to making, using, importing or keeping it; or in any event, sell or offer to sell it for foreign defence purposes or for the production or supply of specified drugs and medicines, or dispose or offer to dispose of it (otherwise than by selling it) for any purpose whatever; where the invention is a process, may use it or do in relation to any product obtained directly by means of the process anything mentioned in paragraph (a) above; without prejudice to the foregoing, where the invention or any product obtained directly by means of the invention is a specified drug or medicine, may sell or offer to sell the drug or medicine; may supply or offer to supply to any person any of the means, relating to an essential element of the invention, for putting the invention into effect; may dispose or offer to dispose of anything which was made, used, imported or kept in the exercise of the powers conferred by this section and which is no longer required for the purpose for which it was made, used, imported or kept (as the case may be),

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Source: legislation.gov.uk · retrieved 2026-09-04